Originally Posted by Phunhog
Why are you steeping your grains separate from your main mash? Everything can be/should be in the mash tun. As far a boiling in a corny keg...is that even possible? Mine all have rubber bottoms. Even if you could I can see no possible benefit from it and lots of negatives.
Have you ever TRIED to get your arm all the way down to the bottom of a 5 gallon corny keg?
IMO, the only kegs viable for cooking with are sanke kegs. Even then, you cut them up, drill/make holes in them so that they make proper kettles. If you did that with a corny, it's not going to work for serving too. IMO, use corny kegs to serve (or even ferment) beer, cook in kettles/keggles.
BTW, everything I've ever read has you put all the grains into the mash tun together. While some people will add different grains towards the end (to lessen their contribution) that's the rarity to the process. 99.95% of the time, it all goes in at the same time.